Regioselective synthesis of 1,5-diaryl-1H-imidazoles by palladium-catalyzed direct arylation of 1-aryl-1H-imidazoles
Articolo
Data di Pubblicazione:
2005
Citazione:
Regioselective synthesis of 1,5-diaryl-1H-imidazoles by palladium-catalyzed direct arylation of 1-aryl-1H-imidazoles / F. Bellina, S. Cauteruccio, L. Mannina, R. Rossi, S. Viel. - In: JOURNAL OF ORGANIC CHEMISTRY. - ISSN 0022-3263. - 70:10(2005), pp. 3997-4005. [10.1021/jo050274a]
Abstract:
A variety of 1,5-diaryl-1H-imidazoles have been regioselectively synthesized by direct coupling of 1-aryl-1H-imidazoles with aryl iodides or bromides in DMF in the presence of CsF as the base and a catalyst precursor consisting of a mixture of Pd(OAc)(2) and AsPh3. The data obtained in this synthetic study support a reaction mechanism involving an electrophilic attack of an arylpalladium(II) halide species onto the imidazole ring. Interestingly, some imidazole derivatives synthesized in this study have been found to exhibit significant cytotoxic activity against human tumor cell lines.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
F. Bellina, S. Cauteruccio, L. Mannina, R. Rossi, S. Viel
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